#include<string.h>
#include<stdio.h>
int main() {
    char *text="To know everything is to know nothing.";
    char *key="thing";
    char *pos=strstr(text,key);
    if(pos==NULL)
        puts("NOT FOUND");
    else {
        pos=strstr(pos+strlen(key),key);
        if(pos==NULL)
            puts("NOT FOUND");
        else {
            //TODO
        }

    }
    return 0;
}
